The effect of climate fluctuation on chimpanzee birth sex ratio.
Climate and weather conditions, such as the North Atlantic Oscillation, precipitation and temperature influence the birth sex ratio (BSR) of various higher latitude species, including deer, elephant seals or northern human populations. Although, tropical regions show only little variation in tempera...
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ftdoajarticles:oai:doaj.org/article:eaf663afa477494885cc48ca0f3ff6fd 2023-05-15T16:05:44+02:00 The effect of climate fluctuation on chimpanzee birth sex ratio. Hjalmar S Kühl Antoine N'Guessan Julia Riedel Sonja Metzger Tobias Deschner 2012-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0035610 https://doaj.org/article/eaf663afa477494885cc48ca0f3ff6fd EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC3338517?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0035610 https://doaj.org/article/eaf663afa477494885cc48ca0f3ff6fd PLoS ONE, Vol 7, Iss 4, p e35610 (2012) Medicine R Science Q article 2012 ftdoajarticles https://doi.org/10.1371/journal.pone.0035610 2022-12-30T21:59:54Z Climate and weather conditions, such as the North Atlantic Oscillation, precipitation and temperature influence the birth sex ratio (BSR) of various higher latitude species, including deer, elephant seals or northern human populations. Although, tropical regions show only little variation in temperature, climate and weather conditions can fluctuate with consequences for phenology and food resource availability. Here, we evaluate, whether the BSR of chimpanzees, inhabiting African tropical forests, is affected by climate fluctuations as well. Additionally, we evaluate, if variation in consumption of a key food resource with high nutritional value, Coula edulis nuts, is linked to both climate fluctuations and variation in BSR. We use long-term data from two study groups located in Taï National Park, Côte d'Ivoire to assess the influence of local weather conditions and the global climate driver El Niño Southern Oscillation (ENSO) on offspring sex. Côte d'Ivoire has experienced considerable climate variation over the last decades, with increasing temperature and declining precipitation. For both groups we find very similar time windows around the month of conception, in which offspring sex is well predicted by ENSO, with more males following low ENSO values, corresponding to periods of high rainfall. Furthermore, we find that the time spent cracking and feeding on Coula nuts is strongly influenced by climate conditions. Although, some of our analysis suggest that a higher proportion of males is born after periods with higher nut consumption frequency, we cannot conclude decisively at this point that nut consumption may influence shifts in BSR. All results combined suggest that also chimpanzees may experience climate related shifts in offspring sex ratios as response to climate fluctuation. Article in Journal/Newspaper Elephant Seals North Atlantic North Atlantic oscillation Directory of Open Access Journals: DOAJ Articles PLoS ONE 7 4 e35610 |
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Medicine R Science Q |
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Medicine R Science Q Hjalmar S Kühl Antoine N'Guessan Julia Riedel Sonja Metzger Tobias Deschner The effect of climate fluctuation on chimpanzee birth sex ratio. |
topic_facet |
Medicine R Science Q |
description |
Climate and weather conditions, such as the North Atlantic Oscillation, precipitation and temperature influence the birth sex ratio (BSR) of various higher latitude species, including deer, elephant seals or northern human populations. Although, tropical regions show only little variation in temperature, climate and weather conditions can fluctuate with consequences for phenology and food resource availability. Here, we evaluate, whether the BSR of chimpanzees, inhabiting African tropical forests, is affected by climate fluctuations as well. Additionally, we evaluate, if variation in consumption of a key food resource with high nutritional value, Coula edulis nuts, is linked to both climate fluctuations and variation in BSR. We use long-term data from two study groups located in Taï National Park, Côte d'Ivoire to assess the influence of local weather conditions and the global climate driver El Niño Southern Oscillation (ENSO) on offspring sex. Côte d'Ivoire has experienced considerable climate variation over the last decades, with increasing temperature and declining precipitation. For both groups we find very similar time windows around the month of conception, in which offspring sex is well predicted by ENSO, with more males following low ENSO values, corresponding to periods of high rainfall. Furthermore, we find that the time spent cracking and feeding on Coula nuts is strongly influenced by climate conditions. Although, some of our analysis suggest that a higher proportion of males is born after periods with higher nut consumption frequency, we cannot conclude decisively at this point that nut consumption may influence shifts in BSR. All results combined suggest that also chimpanzees may experience climate related shifts in offspring sex ratios as response to climate fluctuation. |
format |
Article in Journal/Newspaper |
author |
Hjalmar S Kühl Antoine N'Guessan Julia Riedel Sonja Metzger Tobias Deschner |
author_facet |
Hjalmar S Kühl Antoine N'Guessan Julia Riedel Sonja Metzger Tobias Deschner |
author_sort |
Hjalmar S Kühl |
title |
The effect of climate fluctuation on chimpanzee birth sex ratio. |
title_short |
The effect of climate fluctuation on chimpanzee birth sex ratio. |
title_full |
The effect of climate fluctuation on chimpanzee birth sex ratio. |
title_fullStr |
The effect of climate fluctuation on chimpanzee birth sex ratio. |
title_full_unstemmed |
The effect of climate fluctuation on chimpanzee birth sex ratio. |
title_sort |
effect of climate fluctuation on chimpanzee birth sex ratio. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2012 |
url |
https://doi.org/10.1371/journal.pone.0035610 https://doaj.org/article/eaf663afa477494885cc48ca0f3ff6fd |
genre |
Elephant Seals North Atlantic North Atlantic oscillation |
genre_facet |
Elephant Seals North Atlantic North Atlantic oscillation |
op_source |
PLoS ONE, Vol 7, Iss 4, p e35610 (2012) |
op_relation |
http://europepmc.org/articles/PMC3338517?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0035610 https://doaj.org/article/eaf663afa477494885cc48ca0f3ff6fd |
op_doi |
https://doi.org/10.1371/journal.pone.0035610 |
container_title |
PLoS ONE |
container_volume |
7 |
container_issue |
4 |
container_start_page |
e35610 |
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1766401633960329216 |